Mathematics – Logic
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976anah.iafcq....b&link_type=abstract
International Astronautical Federation, International Astronautical Congress, 27th, Anaheim, Calif., Oct. 10-16, 1976, 8 p. NAS
Mathematics
Logic
Apollo Soyuz Test Project, Astronaut Performance, Dark Adaptation, Radiation Hazards, Visual Observation, Abundance, Physiological Responses, Primary Cosmic Rays, Proton Energy, Radiation Tolerance, Retinal Adaptation
Scientific paper
A total of 82 visual events was reported by two dark-adapted astronauts during a 90-minute orbit at 225 km altitude. Silver chloride crystal events for that orbit totaled 69 stopping protons and alphas per sq cm and 304 heavy ions with stopping power of 150 MeV sq cm/g or greater. The frequency of visual observations near the geomagnetic poles corresponds to calculated abundances of ions with LET greater than 5 keV per micrometer in tissue. Nuclear collisions of fast protons on C, N, and O in the retina or the abundance of stopping protons can explain the low frequency of events in the SAA for this mission in comparison with the high frequency during Skylab IV at 443 km altitude.
Budinger T. F.
Huesman R. H.
Schopper E.
Schott Jobst-Ulrich
Tobias Cornelius A.
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